jjasl4ever
The glassmaker is not able to draw enough air out to the pipe to accidentally inhale hot air. Some glassmakers purposely collapse a bubble by inhaling to achieve certain designs. @garry_nelsonjr4mon

jjasl4ever
I would recommend to try it. Not anything like I thought it was once we were actually doing it. I think it helps to be a little bit of a detailed person too @madredes4mon